EP3595833A1

EP3595833A1 - Cutting tool for rotationally machining a workpiece

Info

Publication number: EP3595833A1
Application number: EP18714951.3A
Authority: EP
Inventors: Peter Burtscher; Josef Prast
Original assignee: Ceratizit Austria GmbH
Current assignee: Ceratizit Austria GmbH
Priority date: 2017-03-14
Filing date: 2018-02-26
Publication date: 2020-01-22
Anticipated expiration: 2038-02-26
Also published as: WO2018165685A1; AT15846U1; EP3595833B1

Abstract

The invention relates to a cutting tool (10) for rotationally machining a workpiece, having a tool shaft (20) with a cutting end (30) for machining the workpiece and a holding end (40) that is held in a tool holding device (100) along a shaft axis (SA) of the tool shaft (20). The holding end (40) has at least one axial securing section (42), which is formed on an outer circumference of the holding end (40), for securing against axial withdrawal along the shaft axis (SA) in a holding direction (AR) and at least one axial positioning section (44), which is formed on an end face of the holding end (40), for axial movement along the shaft axis (SA) in the withdrawal direction (AR).

Description

CUTTING TOOL FOR THE ROTATORY PROCESSING OF ONE

WORKPIECE

The present invention relates to a cutting tool for the rotational machining of a workpiece, an axial securing device for securing such a cutting tool, a cutting system with a

Cutting tool and an axial securing device and a method for inserting a cutting tool in an axial securing device. It is known that cutting tools are used to make a

perform rotary machining of a workpiece. These are, in particular, cutting tools which can be designed as cutters or drills. A rotary machining of the workpiece is to be understood in particular as meaning that the cutting tool itself carries out a rotation about its shaft axis for the machining. In this case, cutting tools according to the invention can be distinguished from known cutting tools for other machining methods, for example with rotating workpieces during turning processes. A disadvantage of the known solutions is that cutting tools which are to perform a rotational machining of workpieces are subjected to different loads, and to counteract these different loads with different mechanical solutions. In addition to a support of the actual cutting force, which is applied to the workpiece, usually an angular adjustment of the individual cutting surfaces of such cutting tools is given. This means that not only the cutting force has to be supported during machining with the tool, but by the angular positioning described a pull-out force acts on the cutting tool. In other words, during its rotation, the cutting tool tends to be pulled out of a corresponding tool holder along this force. In known cutting tools, this is achieved by a pull-out protection that usually laterally with the help of a screw

Fixation of the cutting tool is performed, as is the case, for example, especially in so-called Weldon recordings. This from the side used screw with a clamping functionality now prevents the pull-out force the cutting tool from the corresponding

Pull out the tool holder. However, it is disadvantageous that the lateral action of the screwing and the

corresponding clamping functionality of the concentricity of the cutting tool deteriorates. In particular, this can lead to the shank axis shifting out of the center of the tool receiving device or

tilted and thus the shaft axis no longer coaxial with the central

Rotation axis of the tool receiving device runs. This can lead to a deteriorated quality of machined workpieces. In addition, it can cause the cutting tool with a smaller

Duration of use can be used. The wear of a cutting tool with non-coaxial shaft axis alignment is also increased. It is an object of the present invention to at least partially overcome the disadvantages described above. In particular, it is an object of the present invention, in a cost effective and simple way

To provide cutting tool with a simple pull-out protection and at the same time to ensure the best possible concentricity for the cutting tool.

The above object is achieved by a cutting tool having the feature of claim 1, an axial securing with the features of

Claim 10, a cutting system with the features of claim 14 and a method having the features of claim 16. Further features and details of the invention will become apparent from the dependent claims, the

Description and the drawings. In this case, features and details that are described in connection with the cutting tool according to the invention apply, of course, in connection with the axial securing device according to the invention, the cutting system according to the invention and the method according to the invention and in each case vice versa, so that with respect to the disclosure of the individual invention aspects always reciprocal reference is or can be taken. According to the invention, a cutting tool is provided for the rotational machining of a workpiece. Such a cutting tool has a tool shank with a cutting end for machining the workpiece. Further, a receiving end is provided for receiving along a shaft axis of the tool shank in one

Tool-holding device. An inventive cutting tool is characterized in that the receiving end at least one

Axial securing portion for securing against an axial extension along the shaft axis in a pull-out direction. Moreover, the receiving end is provided with at least one axial positioning portion for axial positioning, i. a movement along the shaft axis, provided in the extension direction. Preferably, the at least one

Axial positioning portion be equipped with at least one contact surface, which has an acute-angled positioning angle with a defined by the shaft axis as surface normal shank cross-section.

A cutting tool according to the invention can thus be, for example, a drilling tool or a milling tool in a known manner. For machining the workpiece, the cutting tool is rotated about one

Offset axis of rotation, which in particular the shaft axis in coaxial alignment with a corresponding axis of rotation of

Tool receiving device is. The tool receiving device serves in different ways the actual recording of the

Cutting tool. Thus, a direct as well as an indirect recording can be provided here, as will be described later with reference to the axial

Safety device is explained in more detail. At the cutting end, at least one cutting edge is provided on the cutting tool in order to remove the cutting edge

Machining the workpiece. Along the shaft axis can now be the receiving end of the tool shank in the

Tool receiving device are attached.

It is now one of the core ideas of the present invention that the

Aufnahmeende two different functionalities in different geometric sections are formed separately from each other. The different functionalities are on the one hand the axial securing and on the other hand the axial positioning. The axial securing is here the primary protection against axial extension along the

Shaft axis. For example, the axial securing section may have geometric formations, which may be in the form of projections or

Recesses, for example, with the later explained form fit, provide the axial pull-out protection. The axial securing portion may be preferred as at least one recess or groove on the

Be formed outside circumference of the receiving end. In particular, the respective axial securing section thereby acts with a corresponding one

Counter-securing portion of an axial securing device of

Tool holder together.

The backup against the axial extension is understood in particular as a geometric backup to after insertion of the

In the tool shank, ensure that an axial separation is avoided during loading during the rotational machining of the workpiece. In particular, this goes with a movement of the

Receiving end or the axial securing portion of a

Release position in a safety position, in which against the axial extension of the backup functionality is given, accompanied.

Separately from the axial securing section, an axial positioning section is now additionally provided in accordance with the invention. The positioning along the shaft axis in the extension direction is to be understood in the sense of the present invention as a positioning movement. In particular, the axial positioning portion interacts with the

Axial securing section, so that during the securing movement from the release position to the securing position automatically the

Positioning movement is performed. The positioning movement is used to provide positioning of the shaft axis in the extension direction. By this is meant that for positioning the entire cutting tool is moved along the shaft axis in the extension direction. This means that through the interaction between one Axial positioning portion and a corresponding counter-contact surface of the axial securing device directed in the direction of the extract positioning movement is performed automatically with the securing movement, while an initially existing axial play the

Cutting tool is eliminated in the tool receiving device. The coordinated training between the

Axial positioning portion or the contact surface on the one hand and an associated counter-contact surface of the axial securing device on the other hand causes the complete elimination of the axial play of the recorded

Cutting tool.

If a cutting tool is in use, then the corresponding cutting force is transmitted via the cutting tool to the receiving end and there to the axial securing device. The power is divided in particular in two components. First, it is the

Cutting force, which is eroded by rotation. In addition, it is a pull-out force, which would like to pull out the cutting tool from the tool receiving device along the shaft axis in the extension direction. Thus, this pull-out force acts in the same direction as the

Axial positioning section of the cutting tool in his

Has moved or positioned there backup position. The force acting during machining in the insert causes the cutting tool to be held in its securing position without play. To make this available, the contact surface can be designed such that it has a positioning angle in the defined manner to the

Has shank cross-section, which is formed at an acute angle. Through this acute-angled training is now ensured that, for example, by a mounting movement in a rotating manner not only a rotational movement for the formation of the backup using the Axial-securing section is provided, but in addition to the principle of mutually moving slated planes and a lifting movement of the

Tool receiving device in the extension direction out. This double movement, ie the rotation and the lifting movement, is separated by two separate ones Component sections, namely the axial securing portion on the one hand and the axial positioning provided on the other hand, and brings in this way in a cost effective and simple way twice

Backup functionality with itself.

In addition to the increased safety in accordance with the invention, the axial positioning by means of the axial positioning section also does not exert any influence on the concentricity or alignment of the shaft axis relative to the tool receiving device. In addition to an improved

Backup functionality is an improved concentricity at the same time

Given reduced complexity of the entire cutting tool.

It may be advantageous if the contact surface for contacting with a mating contact surface of an axial securing device of a

Tool removal is formed. The contact surface may, in particular in the form of a flat surface, contact a counter-contact surface which may be e.g. can be designed as a projection. On the other hand, the contact surface may be e.g. Also be formed on a projection itself, which can in particular contact a flat counter-contact surface. As will be explained later, the contact surface can provide sliding functionality during contacting with the counter-contact surface. In particular, only one of the two contact surfaces, ie the contact surface or the counter-contact surface, is formed as a surface or flat surface. Of course, other surfaces, for example, spherical surfaces or curved surfaces may be advantageous to constant contact over different

Movement courses in punctiform and / or linear manner to

To make available. It is fundamentally irrelevant in which way the contact surface contacts the counter-contact surface. However, preferred is the later explained sliding contact between these two component sections using the principle of slated planes.

It may also be advantageous if in an inventive

Cutting tool, the contact surface has a surface orientation for a positioning translation along the shaft axis during rotation about the Shaft axis between a release position and a securing position. As already mentioned in the introduction, this is the thrust reversal described. The positioning movement thus leads to the interaction between the contact surface and

Counter-contact surface this positioning movement is performed. In other words, the positioning movement serves the whole

To move translationally cutting tool along the shaft axis or to completely eliminate the initially existing game. Upon movement to the securing position, the cutting tool is moved a small amount of movement out of the tool receiving device, completely eliminating the initial clearance. This represents in comparison to solutions in which a movement in a safety position against the extension direction takes place, which is a thrust reverser. The already introduced positioning angle is executed in an acute manner, and preferably less than about 30 °. Even smaller angular ranges, for example in the range between 5 ° and 15 °, are conceivable, since even slight differences in the stroke for the positioning movement on the principle of slanted planes can provide the functionality according to the invention. Another advantage may be when the contact surface is designed as a sliding surface for slipping a counter-contact surface of a

Axial securing device of a tool receiving device during the positioning movement. This means that the sliding allows a particularly simple and cost-effective design of the cutting tool. Elaborate storage functionalities are not necessary here. In particular, this is advantageous in the later explained

Assembly movement in the form of a Montagerotation, which can be performed, for example, by a maximum of 120 °. This in turn means that relatively short distances must be bridged by this sliding. In other words, by a corresponding sliding contact not only a compact, but also an efficient and low-friction construction possible. It should be noted that in particular the later explained wedge angle are designed so that a release of the cutting tool, with a positioning movement of the securing position in the Release position is possible without having to overcome a self-locking by appropriate angle correlations.

Another advantage is when in an inventive

Cutting tool, the at least one axial securing portion has at least one positive locking surface for a positive engagement in a counter-form-fitting surface of a counter-securing portion of a

Axial securing device of a tool receiving device. This form-fitting surface is arranged in particular transversely or substantially transversely to the extension direction. Of course, two or more form-fitting surfaces are conceivable, which are arranged in particular in a symmetrical or uniform manner on the circumference of the receiving end of the cutting tool. The use of form-fitting functionalities in the form of form-fitting surfaces is a simple, cost-effective and, in particular, compact way of providing the axial securing functionality. For example, such a positive connection can be provided by a bayonet-like design with corresponding projections and grooves. Moreover, it is advantageous if in an inventive

Cutting tool between the positive surface of the

Axial securing section and the contact surface of the

Axial positioning portion with respect to the circumferential direction of a wedge angle is formed, preferably pointed training. In particular, the wedge angle is in the range of less than about 45 ° and greater than about 7 °. As a result of the wedge, in addition to the elimination of axial play, an additional clamping effect is provided, which indicates the end of the same to the user when carrying out the positioning movement or during the assembly movement. Forming the wedge angle of more than about 7 ° causes an undesirable self-locking is avoided and thus the release movement from the securing position to the release position without overcoming such self-locking is possible. Another advantage is when, in a cutting tool according to the invention, the receiving end, in particular the

Axial securing portion, is designed for a mounting movement, in particular a Montagerotation, relative to the

Tool receiving device, in particular to the

Counter-securing section, between a release position and a securing position. The Montagerotation contains preferably

at the same time the positioning movement. In other words, at the same time the assembly movement and the positioning movement are performed by a single movement, since for the assembly movement, the corresponding forced operation by the axial securing portion and the positioning for the corresponding forced operation by the

Axial positioning section is provided. For example, the mounting rotation is done by a defined rotation angle of about 120 ° or less. In this case, the corresponding axial securing sections enter, for example, in a form-locking manner into the

Counter-form-fitting sections of a counter-securing section of

Axial securing device. During this rotational movement also enters a contact surface with a corresponding counter-contact surface of the axial securing device in contact and cooperates so that not only the positive engagement between the

Axial securing sections and the counter-locking surfaces for

Is made available, but at the same time by the described

Thrust reversal a lifting movement in the extension direction for the entire

Cutting tool is performed. The combination of assembly movement and positioning movement is thus the overall movement of the

Cutting tool which a rotational portion through the

Montageotation and a translational share by the

Positioning movement includes.

It is a further advantage if, in the case of an inventive design of the cutting tool, at least two axial securing sections, in particular on the peripheral surface of the tool shaft, are arranged. The

Axial securing sections can be particularly advantageous as grooves or Wells be formed. Of course, three or more axial securing sections are providable, with three may be particularly advantageous in terms of an advantageous radial centering and avoiding geometric overdetermination. The number of

Axial positioning sections can vary with the number of

Axial securing sections to be identical, in particular in a symmetrical or uniform manner, the coaxiality between the shaft axis and a corresponding axis of rotation of the tool receiving device

maintain. The combination of the maximum space requirement, a slight latching and a short assembly movement or assembly rotation is particularly advantageous in this embodiment.

Likewise subject of the present invention is a

Axial securing device for securing a cutting tool for the rotational machining of a workpiece, in particular with the features described above. For this purpose, the axial securing device has a counter-securing section for engagement in an axial securing section of the cutting tool for securing against an axial extension along the shank axis of the tool shank of the cutting tool. Next is a counter-contact surface for interaction with a

Axial positioning portion of the cutting tool for axial movement of the cutting tool along the shaft axis provided in the extension direction. Thus, the axial securing device according to the invention brings about the same advantages as described in detail above with reference to FIG

Cutting tool have been explained.

It is possible that the axial securing device in one piece or in the

Is formed substantially in one piece with a tool receiving device. It is the corresponding chuck of an associated machine tool in which the cutting tools are to be used.

It is also conceivable that in an inventive

Axial securing device this has a base body, which separately is formed by a tool receiving device. Furthermore, such a base body has a fastening interface for attachment in the tool receiving device. Such a mounting interface may be, for example, a thread to provide the associated attachment available. However, other types of attachment are possible, but they must provide a twist-proof attachment. Due to the separate training of the tool holder device of the

Base body and thus the axial securing device even with existing tool receiving devices to be retrofitted. The axial securing device is designed here as an insert or as a separate component.

Moreover, it is advantageous if in an axial securing device in a separate embodiment, the base body has a mounting interface for receiving a fastening tool for performing a

Mounting movement. In this case, the mounting interface is provided in particular with a hexagon or another form-fitting section in order to be able to cooperate in a correspondingly positive manner, preferably in normative design with an associated fastening tool. Using the mounting interface and the fastening tool, it is possible, a corresponding mounting movement for the axial

To perform safety device.

Another object of the present invention is a cutting system for the rotational machining of a workpiece with a

Axial securing device and a cutting tool. The

In this case, the cutting tool has a tool shank with a cutting end for machining the workpiece and a receiving end for receiving along a shank axis of the tool shank in one

Tool receiving device on. The recording end reaches by means of

at least one formed on an outer periphery of the receiving end axial securing portion in a counter-securing portion of

An axial securing device for securing against an axial extension along the shaft axis in an extension direction. Next acts at least an axial securing portion by means of at least one formed on an end face of the receiving end axial positioning portion with a

Counter-contact surface of the axial securing device together for axial positioning along the shaft axis in the extension direction. An inventive cutting system thus combines one

Axial securing device with a cutting tool described above and accordingly brings the same advantages as they have been explained in detail with respect to this. In this case, the cutting tool can in particular be configured as described above and / or the

Axial securing device in particular be configured as described above.

Another object of the present invention is a method for inserting a cutting tool according to the present invention into an axial securing device according to the present invention, comprising the following steps:

Inserting the receiving end of the tool shank along the

Shaft axis in a tool receiving device,

- Introduce the axial securing portion in the

Counter-securing section of the axial securing device,

- Performing an assembly movement of the cutting tool relative to the axial securing device from a release position in one

Securing position. Here is described again how using a single movement both the assembly movement and the positioning movement is performed in order to achieve the advantages of the invention in an illustrated manner simple, inexpensive and fast. Further advantages, features and details of the invention will become apparent from the following description, with reference to the

Drawings embodiments of the invention are described in detail. In this case, those mentioned in the claims and in the description Characteristics each be individually essential to the invention or in any combination. They show schematically:

Fig. 1 shows an embodiment of an inventive

Cutting tool

Fig. 2 is an enlarged detail view of the embodiment of

Fig. 1,

Fig. 3 shows an embodiment of an inventive

Axial securing device,

4 shows the embodiment of FIG. 3 in plan view,

Fig. 5 shows an embodiment of a tool receiving device with

Cutting system

Fig. 6 shows the embodiment of Figs. 1 to 4 with the cutting tool in

Release position,

7 shows the embodiment of FIG. 6 during the assembly movement, FIG.

8 shows the embodiment of FIGS. 6 and 7 in the securing position,

Fig. 9 shows the embodiment of Fig. 6 in the schematic

Partial cross-section,

Fig. 10 shows the embodiment of Fig. 7 in the schematic partial cross-section and

Fig. 11, the embodiment of Fig. 8 in the schematic

Partial cross-section.

Figs. 1 and 2 show schematically an embodiment of a

1 shows that along the tool shank 20, a cutting end 30 with at least one (not shown in the drawings) cutting edge on one side and a receiving end 40 at the other end of the tool shank 20 are provided. The cutting tool 10 may in particular be formed in one piece, e.g. as a so-called solid carbide tool made of carbide or according to another material. The cutting tool 10 can rotate about the associated shaft axis SA to the desired

To provide cutting functionality available. It is interesting on the cutting tool 10 in particular the receiving end 40, which is the Fig. 2 shows in more detail. Here are three along the circumference

Axial securing sections 42 formed. Each of these

Axial securing sections 42 is designed for a form-locking functionality, so that here in bayonet-like manner of closure an associated

Forming surface 43 is formed. As can be seen in particular in Fig. 2, the axial securing portions 42 are formed in the concrete embodiment as L-shaped recesses in the outer periphery of the receiving end 40, wherein a leg of the L-shaped recesses in the direction of the end side of the receiving end leaking and the other leg extends transversely to the shaft axis SA, in particular may extend substantially perpendicular to this. The corresponding functionality will be explained later with reference to FIGS. 6 to 11.

It can also be clearly seen in FIG. 2 that in the case of the realization shown in detail, each axial securing section 42 is a

Axial positioning portion 44 is assigned. However, this is not mandatory, but it may e.g. just one

Axial positioning portion 44 may be provided, the

Axial positioning sections 44 are configured here in the form of contact surfaces 45 which have an acute angle to an associated cross section of the cutting tool 10 perpendicular to the shaft axis SA.

In particular, the contact surfaces 45 are formed as chamfered partial surfaces on the end face of the receiving end 40. Thus, the positioning movement also to be explained with reference to Figs. 6 to 11 can be performed.

Figs. 3 and 4 show an embodiment of a

Axial securing device 140, which in a

Tool receiving device 100 according to FIG. 5 can be used. Of course, the axial securing device 140 may be designed as a separate component with a base body 146, as shown in FIGS. 3 to 5 show. However, it is also conceivable that the

Axial securing device 140 is an integral, in particular monolithic, component of the tool receiving device 100. For a separate Embodiment, as shown in FIGS. 3 to 5, by means of a fastening interface 147 a fastening possibility, for example by means of a thread, in the tool receiving device 100 given. In order to carry out this attachment, here in the embodiment according to FIGS. 3 to 5 an ontag interface 148 in the form of a

Hexagon socket formed in order to easily transmit a tightening torque on the mounting interface 147 can. For the

inventive fuse in the axial extension direction and the

corresponding positioning functionality here are the corresponding corresponding components to an inner recess or in the

Substantially cylindrical recess in the axial securing device 140 configured. At the inner circumference of the inner surface of this cylindrical

Recess here are three counter-securing sections 142 in the form of

Counter-mold surfaces 143 provided. Although the realization of three counter-securing portions 142 is advantageous, fewer or more such counter-securing portions 142 may be provided. The

Counter-securing portions 142 are preferably formed as projections, which in the inner recess of the axial securing device 140th

protrude. Preferably, the counter-securing portions 142 may be formed as elongated projections which extend at least substantially transversely, in particular preferably perpendicular, to the predetermined axis of rotation. In addition, the corresponding counterpart to the contact surface 45 at the receiving end 40 of the cutting tool 10 is given by means of a counter-contact surface 145.

FIGS. 6 to 11 describe stepwise, as in a

method according to the invention, the attachment and thus the backup against the axial excerpt is ensured for a cutting tool. In a first step, as shown in FIGS. 6 and 9, along the shaft axis SA, the cutting tool 10 is introduced with its receiving end 40 into the associated cylindrical recess of the axial securing device 140. The alignment of the associated

Axial securing portions 42 and the axial positioning portions 44 to the counter-securing portions 142 and the counter-contact surfaces 145 on the release position FP be aligned. As soon as the insertion movement according to FIGS. 6 and 9 has been carried out, then the respective one is located

Contact surface 45 in positioning contact with the associated

Counter contact surface 145. Now, after insertion, a

Assembly movement in the form of a montagerotation of the cutting tool along the mounting direction MR. This mounting direction MR is the cutting direction SR, i. for editing with the

Cutting tool 10 predetermined rotation direction, opposite directions. During this rotation, now with respect to the

Cutting tool 10 itself and the shaft axis SA two fundamental movements. The first movement is the pure assembly movement, which provides the basic functionality of the safeguard against the axial extension. This will be explained below. By the rotation along the mounting direction MR is through the

Bayonet system generates a positive engagement of the form-fitting surfaces 43 in the associated counter-form surfaces 143. This ensures that after reaching the securing position SP, as shown in FIGS. 8 and 11, a pull-out force along the extension direction AR can be introduced via this form-fitting portion in the axial securing portion 42 and is supported there. A corresponding extraction force and the associated supports now cause the cutting tool 10 remains in this safety position SP and can not be pulled out. The second movement is the positioning movement, which is performed simultaneously with the assembly movement. During the rotation along the

Mounting direction MR slides the respective counter-contact surface 145 on the contact surface 45 respectively. Here, it can be clearly seen in FIGS. 3 and 4 that the counter-contact surfaces 145 in the illustrated embodiment as

Ball surfaces are formed. It is immediately apparent that the mating contact surfaces 145 can also be projections with a different shape. But there are also other realizations for that

Cooperation between contact surfaces 45 and counter-contact surfaces 145 possible, in particular also the principle of a sliding movement on a can use the inclined plane. When sliding on the associated

Contact surface 45 is applied a pushing movement or lifting movement on the cutting tool 10. In this case, the cutting tool 10 along the extension direction AR, ie from the cylindrical opening of the

Axial securing device 140 moved out. This moving out is provided exactly in the direction in which a corresponding pull-out force from an associated workpiece would also act. In other words, the cutting tool moves from the position of FIGS. 7 and 10 to the position according to FIGS. 8 and 11 along the shank axis SA in the extension direction AR out of the axial securing device 140. This moving out now leads to that in the safety position SP, the entire cutting tool 10 is in this pushed out position and any axial clearance is eliminated. Now acts a pull-out force when inserting the cutting tool from a workpiece on this

Cutting tool 10, so this pull-out force causes further pulling along this positioning movement takes place, but further emigration via the interaction of axial securing portion 42 and counter-securing portion 142 is prevented. However, in the

Release position FP back, the cutting tool 10 would have to move against the mounting direction. Thus, by the

Axial positioning and this thrust reversal the pull-out force when using the cutting tool 10 used to simultaneously serve as a securing force, which the cutting tool 10 on the

Axial positioning functionality in the safety position SP keeps and secures free from axial play.

Although in the above description an equal number of

Axial securing portions 42 and contact surfaces 45 for an axial

Positioning may be described e.g. the number but also be different. For example, For example, a plurality of axial securing portions 42 and mating securing portions 142 cooperating therewith may be provided, but may also be e.g. only one contact surface 45 and / or

Counter contact surface 145 for axial positioning. Although the contact surfaces 45 have been described in the concrete example as inclined relative to a cross section to the longitudinal axis surfaces and the counter-contact surfaces 145 as cooperating projections, for example, in particular a reverse configuration is conceivable in which the contact surfaces 45 are formed on projections and the

Counter contact areas 145 as e.g. inclined surfaces.

The above explanation of the embodiments describes the present invention solely by way of example.

Of course, individual features of the embodiments, if technically feasible, can be combined freely with one another, without departing from the scope of the present invention.

reference numeral

10 cutting tool

20 tool shank

30 cutting end

40 recording end

42 Axial securing section

43 Positive locking surface

44 Axial positioning section

45 contact area

100 tool receiving device

140 Axial securing device

142 Counter-securing section

143 counter-mold surface

145 counter contact area

146 basic body

147 mounting interface

148 mounting interface

200 cutting system

SA shaft axis

AR extension direction

MR mounting direction

SR cutting direction

FP release position

SP backup position

α positioning angle

Claims

claims

A cutting tool (10) for rotatably machining a workpiece, comprising a tool shank (20) having a cutting end (30) for machining the workpiece and a workpiece

A receiving end (40) for receiving along a shaft axis (SA) of the tool shank (20) in a tool receiving device (100), characterized in that the receiving end (40) at least one formed on an outer periphery of the receiving end (40) axial securing portion (42) for securing against an axial extension along the shaft axis (SA) in an extension direction (AR) and at least one on an end face of the receiving end (40)

formed axial positioning portion (44) for an axial

Movement along the shaft axis (SA) in the extension direction (AR) has.

The cutting tool of claim 1, wherein the at least one

Axial positioning portion (44) has at least one contact surface (45), which with a through the shaft axis (SA) as

Surface normal defined shank cross-section an acute-angled

Positioning angle () has.

Cutting tool (0) according to claim 1 or 2, characterized

characterized in that the contact surface (45) for contacting with a counter-contact surface (145) of an axial securing device (140) of a tool receiving device (100) is formed.

Cutting tool (10) according to one of the preceding claims, characterized in that the contact surface (45) has a

Face orientation for positioning translation along the shank axis (SA) upon rotation about the shank axis (SA) between a release position (FP) and a securing position (SP).

5. Cutting tool (10) according to claim 3 or 4, characterized in that the contact surface (45) is designed as a sliding surface for slipping a counter-contact surface (145) of a

Axial securing device (140) one

Tool receiving device (100) during the positioning movement.

Cutting tool (10) according to one of the preceding claims, characterized in that the at least one

Axial securing portion (42) has at least one positive locking surface (43) for a positive engagement in one

Counter-form-fitting surface (143) of a counter-securing portion (142) of an axial securing device (140) of a

Tool receiving device (100).

Cutting tool (10) according to claim 6, characterized in that between the positive locking surface (43) of the axial securing portion (42) and the contact surface (45) of the axial positioning portion (44) is formed a wedge angle of preferably acute training. 8. Cutting tool (10) according to any one of the preceding claims, characterized in that the receiving end (40), in particular the axial securing portion (42) is formed for a

Assembly movement, in particular a Montageotation, relative to the tool receiving device (100), in particular to the

Counter-securing portion (140), between a release position (FP) and a securing position (SP).

Cutting tool (10) according to one of the preceding claims, characterized in that at least two

Axial securing portions (42), in particular on the peripheral surface of the tool shank (20) are arranged.

10. Axial securing device (140) for securing a

Cutting tool (10) for the rotary machining of a

Workpiece, in particular with the features of one of claims 1 to 9, comprising a counter-securing portion (142) for engaging in an axial securing portion (42) of the cutting tool (10) for securing against an axial extension along the shank axis (SA) of the tool shank (20) of the cutting tool (10), further comprising a counter-contact surface (145) for cooperating with a

Axial positioning portion (44) of the cutting tool (10) for an axial movement of the cutting tool along the shaft axis (SA) in the extension direction (AR).

Axial securing device (140) according to claim 10, characterized

characterized in that it is formed integrally or substantially in one piece with a tool receiving device (100).

Axial securing device (140) according to claim 10, characterized

characterized in that it comprises a base (146) formed separately from a tool receiving device (100) and further comprising a mounting interface (147) for attachment in the tool receiving device (100).

Axial securing device (100) according to claim 12, characterized

characterized in that the base body (146) has a

Mounting interface (148) for receiving a

Fixing tool for performing a fastening movement.

14. Cutting system (200) for the rotational machining of a workpiece with an axial securing device (140) and a

A cutting tool (10), the cutting tool (10) comprising a tool shank (20) having a cutting end (30) for machining the workpiece and a receiving end (40) for

Receiving along a shaft axis (SA) of the tool shank (20) in a tool receiving device (100),

wherein the receiving end (40) with at least one of a

Outer circumference of the receiving end (40) formed

Axial securing portion (42) is provided such that the

Receiving end (40) in a release position against a

Extraction direction (AR) in the axial securing device (140) insertable and is movable by rotation about the shaft axis (SA) in a securing position, wherein the axial securing portion (42) in a

Counter-securing portion (142) of the axial securing device (140) engages for securing against an axial extension along the shaft axis (SA) in the extension direction (AR), and

with at least one on an end face of the receiving end (40) formed axial positioning portion (44), which with a

Counter-contact surface (145) of the axial securing device (140) for axial positioning along the shaft axis (SA) in the

Extraction direction (AR), cooperates such that upon rotation of the cutting tool (10) from the release position in the

Securing position, a movement of the cutting tool (10) along the shaft axis (SA) in the extension direction (AR) takes place.

15. Cutting system (200) according to claim 14, characterized in that the cutting tool (10) has the features of one of claims 1 to 9 and / or the axial securing device (140) has the features of one of claims 10 to 13.

16. A method for inserting a cutting tool (10) with the

Features of any one of claims 1 to 9 in a

Axial securing device (140) with the features of one of

Claims 10 to 15, comprising the following steps:

- Inserting the receiving end (40) of the tool shank (20) along the shaft axis (SA) in one

Tool receiving device (100),

- Introducing the axial securing portion (42) in the

Counter-securing section (142) of

Axial securing device (140),

- Performing an assembly movement of the cutting tool (10) relative to the axial securing device (140) from a release position (FP) in a securing position (SP).